Billie's Tennis Shop has the following transactions related to its top-selling Wilson tennis racket for the month of August. Billie's Tennis Shop uses a periodic inventory system. Date August 1 Transactions Beginning inventory Units 8 Unit Cost Total Cost $155 $1,240 August 4 Sale ($200 each) 5 August 11 Purchase 10 145 1,450 August 13 Sale ($215 each) 8 August 20 August 26 August 29 Purchase 10 135 1,350 Sale ($225 each) Purchase 11 10 125 1,250 $5,290 For the specific identification method, the August 4 sale consists of rackets from beginning inventory, the August 13 sale consists of rackets from the August 11 purchase, and the August 26 sale consists of one racket from beginning inventory and 10 rackets from the August 20 purchase. Required: 1. Calculate ending inventory and cost of goods sold at August 31, using the specific identification method. 2. Using FIFO, calculate ending inventory and cost of goods sold at August 31. 3. Using LIFO, calculate ending inventory and cost of goods sold at August 31. 4. Using weighted-average cost, calculate ending inventory and cost of goods sold at August 31. 5. Calculate sales revenue and gross profit under each of the four methods. 6. Comparing FIFO and LIFO, which one provides the more meaningful measure of ending inventory? 7. If Billie's chooses to report inventory using LIFO, record the LIFO adjustment.